Effect of cyclic loading on post-cyclic behaviour of Parit Nipah peat soil
List of Authors
  • Adnan Zainorabidin , Habib Musa Mohamad

Keyword
  • peat, monotonic loading, dynamic triaxial, pre and post-cyclic

Abstract
  • The post-cyclic behaviour of a peat soil after subjecting to cyclic loading is a major topic in this study and interdisciplinary structured. A series laboratory monotonic and cyclic triaxial test followed by post-cyclic monotonic tests carried out to determine the effect of soil behavior when subjected to cyclic loading. Tests were carried out on the undisturbed samples taken from Parit Nipah, Batu Pahat, Malaysia. The cyclic triaxial tests were performed on consolidated undrained specimens with 50mm diameter by 100mm height consequently subsequently followed by monotonic loading. A dynamic triaxial testing system was used to investigate the undrained shear resistance of undisturbed soil samples and tests were performed under different cyclic effective stress ratios from 50 and 100 kPa with various amplitudes from 0.5, 1.0 1.5 and 2.0Hz. Monotonic tests were conducted on soil specimens by controlling the strain rate in order to determine the pre-cyclic and post-cyclic shear strength. The index properties of peat with 650% moisture content and fibre content consist of 27.17% and indicate that Penor peat is classified as Hemic.

Reference
  • 1. Youventharan D., Bujang B.K. H. and Azlan A. (2007) American Journal of Applied Sciences Publisher: Science Publications Audience: Academic.

    2. Termaat R.J (1999). The stability of constructions on peat and organic soils: Accuracy, reliability and reality. Road and hydraulic engineering division, Ministry of transport, public works and water management, Delft, Netherlands.

    3. Cola S., Cortellzzo G. (2005). The shear strength behaviour of two peaty soils. Geotechnical and Geological Engineering (2005) 23: 679-695. DOI 10.1007/s10706-004-9223-9.

    4. Erken A. and M.B.C. Ülker. (2008). The post cyclic shear strength of fine-grained soils. The 14th World Conference on Earthquake Engineering October 12-17, 2008, Beijing, China.

    5. Rodríguez J. A. and J.A. López-Molina (2008). Strain thresholds in soil dynamics. The 14th World Conference on Earthquake Engineering October 12-17, 2008, Beijing, China.

    6. Paikowsky, S.G., Elsayed, A. A. and Kurup, P.U. (2003). Engineering Properties of Cranberry Bog Peat. 2nd International Conference on Advances in Soft Soil Engineering and Technology, Putrajaya, Malaysia, pp 153-171.

    7. Huat, B.K. 2004. Organic and Peat Soils Engineering. Serdang: University Putra Malaysia Press.

    8. Moreno C. A and Edgar Rodriguex E. R. (2004). Dynamic behaviour of Bogota’s subsoil peat and it’s effect in seismic wave propagation. 13thWorld Conference on Earthquake Engineering Vancouver, B.C., Canada August 1-6, 2004 Paper No. 2632.

    9. Habib M. M., Zainorabidin A. and Siti N. A., (2014). Post-Cyclic Behaviour of Soil – A Critical Review. 8th MUCET 2014, Date: 10-11 November 2014, Melaka, Malaysia.